Abstract : The tube is to be used for studying real gas phenomena in a real shock tube. The FJSRL shock tube can be fired at test pressures ranging from 1/2 micron Hg up to atmospheric pressure, with multi-test and multi-driver gas capabilities. Diaphragm pressure ratios range between 100,000 and 10 to the 8th power giving a practical range of Mach numbers, in argon, of 2 <Ms <10. The Mach number repeatibility of the tube is to within approximately 0.5%. The shock wave was shown to decelerate only 0.1%/ft near the test section endwall for the full tube operating range, guaranteeing an essentially constant Mach number over models or instruments of reasonable length. The tube has excellent integrity as a vacuum vessel with a leak rate of < .01 micron/hour. (Author)